Explosion Mechanisms of Core-Collapse Supernovae
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TLDR
The neutrino-heating mechanism, aided by nonradial flows, drives explosions, albeit low-energy ones, of ONeMg-core and some Fe-core progenitors as discussed by the authors.Abstract:
Supernova theory, numerical and analytic, has made remarkable progress in the past decade. This progress was made possible by more sophisticated simulation tools, especially for neutrino transport, improved microphysics, and deeper insights into the role of hydrodynamic instabilities. Violent, large-scale nonradial mass motions are generic in supernova cores. The neutrino-heating mechanism, aided by nonradial flows, drives explosions, albeit low-energy ones, of ONeMg-core and some Fe-core progenitors. The characteristics of the neutrino emission from new-born neutron stars were revised, new features of the gravitational-wave signals were discovered, our notion of supernova nucleosynthesis was shattered, and our understanding of pulsar kicks and explosion asymmetries was significantly improved. But simulations also suggest that neutrino-powered explosions might not explain the most energetic supernovae and hypernovae, which seem to demand magnetorotational driving. Now that modeling is being advanced from two to three dimensions, more realism, new perspectives, and hopefully answers to long-standing questions are coming into reach.read more
Citations
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On the Importance of the Equation of State for the Neutrino-driven Supernova Explosion Mechanism
TL;DR: In this article, the impact of the Lattimer-and-Swesty equations of state (EOS) on the post-bounce dynamics prior to the onset of neutrino-driven supernova explosion was investigated.
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The last minutes of oxygen shell burning in a massive star
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On variations of pre-supernova model properties
Robert Farmer,C. E. Fields,C. E. Fields,C. E. Fields,I. Petermann,I. Petermann,Luc Dessart,Matteo Cantiello,Bill Paxton,Francis Timmes,Francis Timmes +10 more
TL;DR: In this paper, the authors explore the variation in single star 15-30 MESA models due to changes in the number of isotopes in a fully-coupled nuclear reaction network and adjustments in the mass resolution.
References
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